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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Am I missing something with the JavaScript encode? It looks like there's a test for
encodeRailFenceCipher('',3)that is expecting an empty string, but if I return an empty string, I getexpected undefined to equal ''. Is something in the test case coercing the empty string into undefined?